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| author | Liu Bo | 2012-12-27 10:01:23 +0100 |
|---|---|---|
| committer | Josef Bacik | 2013-02-20 15:37:18 +0100 |
| commit | a1897fddd28daf6b23d05a30dc2a18836f77f8e3 (patch) | |
| tree | 801697e69b202721e861ab33d78d7f3bcb6235c5 /fs/btrfs/ctree.h | |
| parent | Btrfs: save us a read_lock (diff) | |
| download | kernel-qcow2-linux-a1897fddd28daf6b23d05a30dc2a18836f77f8e3.tar.gz kernel-qcow2-linux-a1897fddd28daf6b23d05a30dc2a18836f77f8e3.tar.xz kernel-qcow2-linux-a1897fddd28daf6b23d05a30dc2a18836f77f8e3.zip | |
Btrfs: record first logical byte in memory
This'd save us a rbtree search which may become expensive in large filesystem.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 22f012d41fd0..9ee099f3f834 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1250,6 +1250,7 @@ struct btrfs_fs_info { /* block group cache stuff */ spinlock_t block_group_cache_lock; + u64 first_logical_byte; struct rb_root block_group_cache_tree; /* keep track of unallocated space */ |